Thanks for reaching out about Lemon and including photos. Even though the pictures are slightly out of focus, what is observed is the penis and probable rectal prolapse. Causes are likely straining to defecate or urinate. A veterinary visit is recommended as soon as possible because once the rectal tissue dries, unlikely to be saved. Trying to keep it moist with a wet paper towel might work for now but is not a treatment. Good luck.